In the titration of vs , the indicator used is:

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Question

In the titration of $K_2Cr_2O_7$ vs $FeSO_4$, the indicator used is:

Prashant Kotian · Accepted Answer

Correct answer: C. Diphenylamine is an internal redox indicator which gives an intense blue-violet color at the endpoint. Potassium ferricyanide is an external indicator used for the same titration. Given options, C is the standard internal indicator.

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